.login,.register {
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: steelblue;
    color: white;
    font-family: sans-serif;
}
.container {
    background-color: rgba(0, 0, 0, 0.4);
    border-radius: 5px;
    padding: 20px 40px;
}
.container h1 {
    text-align: center;
    margin-bottom: 30px;
}
.form-control {
    position: relative;
    margin: 20px 0 40px;
    width: 300px;
}
.form-control input {
    width: 100%;
    font-size: 18px;
    color: white;
    background-color: transparent;
    border: 0;
    border-bottom: 2px solid white;
    padding: 10px 0;
    display: block;
    outline: 0;
}
.form-control input:focus {
    border-bottom-color: lightblue;
}
.form-control input:valid {
    border-bottom-color: lightblue;
}
.form-control input.wrong {
    border-bottom-color: red;
}
.form-control label {
    position: absolute;
    top: 10px;
    pointer-events: none
}
.form-control label span{
    display:inline-block;
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}
.form-control input:valid + label span,
.form-control input:focus + label span{
    color: lightblue;
    transform: translateY(-30px);
}
.container .btn {
    width: 100%;
    padding: 15px;
    margin-bottom: 20px;
    font-family: inherit;
    border: 0;
    border-radius: 5px;
    background-color: lightblue;
    outline: none;
    cursor: pointer;
}
.container .btn:focus {
    transform: scale(0.98);
}
.container p a {
    text-decoration: none;
    color: lightblue;
}
.container .checkbox {
    margin-bottom: 20px;
    width: 100%;
    height: 20px;
    display: flex;
    align-items: center;
}
.container .checkbox input {
    width: 15px;
    height: 15px;
}
.container .checkbox p{
    height: 15px;
    line-height: 15px;
    margin-left: 5px;
    display: inline-block;
    font-size: 14px;
}